US5016255A - Asymmetric spread spectrum correlator - Google Patents
Asymmetric spread spectrum correlator Download PDFInfo
- Publication number
- US5016255A US5016255A US07/389,914 US38991489A US5016255A US 5016255 A US5016255 A US 5016255A US 38991489 A US38991489 A US 38991489A US 5016255 A US5016255 A US 5016255A
- Authority
- US
- United States
- Prior art keywords
- signal
- chip
- spread spectrum
- sequence
- received spread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
- H04B1/7093—Matched filter type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Claims (16)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/389,914 US5016255A (en) | 1989-08-07 | 1989-08-07 | Asymmetric spread spectrum correlator |
EP91908521A EP0574382A1 (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
CA002105299A CA2105299C (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
PCT/US1991/001540 WO1992016064A1 (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
JP3507577A JPH06505131A (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
US07/698,450 US5396515A (en) | 1989-08-07 | 1991-05-10 | Asymmetric spread spectrum correlator |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/389,914 US5016255A (en) | 1989-08-07 | 1989-08-07 | Asymmetric spread spectrum correlator |
CA002105299A CA2105299C (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
PCT/US1991/001540 WO1992016064A1 (en) | 1989-08-07 | 1991-03-06 | Asymmetric spread spectrum correlator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/698,450 Continuation US5396515A (en) | 1989-08-07 | 1991-05-10 | Asymmetric spread spectrum correlator |
Publications (1)
Publication Number | Publication Date |
---|---|
US5016255A true US5016255A (en) | 1991-05-14 |
Family
ID=25676598
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/389,914 Expired - Lifetime US5016255A (en) | 1989-08-07 | 1989-08-07 | Asymmetric spread spectrum correlator |
US07/698,450 Expired - Lifetime US5396515A (en) | 1989-08-07 | 1991-05-10 | Asymmetric spread spectrum correlator |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/698,450 Expired - Lifetime US5396515A (en) | 1989-08-07 | 1991-05-10 | Asymmetric spread spectrum correlator |
Country Status (4)
Country | Link |
---|---|
US (2) | US5016255A (en) |
EP (1) | EP0574382A1 (en) |
JP (1) | JPH06505131A (en) |
CA (1) | CA2105299C (en) |
Cited By (86)
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WO1992002997A1 (en) * | 1990-08-06 | 1992-02-20 | Omnipoint Corporation | Reciprocal mode saw correlator method and apparatus |
US5144640A (en) * | 1990-01-31 | 1992-09-01 | Futaba Denshi Kogyo K.K. | Correlation device for spectrum spread communication |
US5146471A (en) * | 1989-03-23 | 1992-09-08 | Echelon Systems Corporation | Correlator for spread spectrum communications systems |
US5150377A (en) * | 1990-11-02 | 1992-09-22 | At&T Bell Laboratories | Direct sequence spread spectrum (dsss) communications system with frequency modulation utilized to achieve spectral spreading |
WO1992017011A1 (en) * | 1991-03-13 | 1992-10-01 | Motorola, Inc. | Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system |
US5157686A (en) * | 1990-05-24 | 1992-10-20 | Cylink Corporation | Method and apparatus for the modulation of spread spectrum radio signals |
US5161168A (en) * | 1991-05-15 | 1992-11-03 | Scs Mobilecom, Inc. | Spread spectrum CDMA communications system microwave overlay |
US5164958A (en) * | 1991-05-22 | 1992-11-17 | Cylink Corporation | Spread spectrum cellular handoff method |
US5166952A (en) * | 1990-05-24 | 1992-11-24 | Cylink Corporation | Method and apparatus for the reception and demodulation of spread spectrum radio signals |
US5166951A (en) * | 1991-05-15 | 1992-11-24 | Scs Mobilecom, Inc. | High capacity spread spectrum channel |
US5185762A (en) * | 1991-05-15 | 1993-02-09 | Scs Mobilecom, Inc. | Spread spectrum microwave overlay with notch filter |
US5228056A (en) * | 1990-12-14 | 1993-07-13 | Interdigital Technology Corporation | Synchronous spread-spectrum communications system and method |
US5228053A (en) * | 1991-05-15 | 1993-07-13 | Interdigital Technology Corporation | Spread spectrum cellular overlay CDMA communications system |
US5235615A (en) * | 1991-05-22 | 1993-08-10 | Cylink Corporation | Spread spectrum method |
US5243622A (en) * | 1991-08-02 | 1993-09-07 | General Dynamics Corporation, Electronics Division | Direct-sequence spread-spectrum communication system with asynchronous despreading |
US5253268A (en) * | 1990-05-24 | 1993-10-12 | Cylink Corporation | Method and apparatus for the correlation of sample bits of spread spectrum radio signals |
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US5263050A (en) * | 1992-09-09 | 1993-11-16 | Echelon Corporation | Adaptive threshold in a spread spectrum communications system |
US5274665A (en) * | 1990-12-14 | 1993-12-28 | Interdigital Technology Corporation | Polyopoly overlapping spread spectrum communication system and method |
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US5285469A (en) * | 1991-06-03 | 1994-02-08 | Omnipoint Data Corporation | Spread spectrum wireless telephone system |
US5291516A (en) * | 1991-05-13 | 1994-03-01 | Omnipoint Data Company, Inc. | Dual mode transmitter and receiver |
US5299226A (en) * | 1990-11-16 | 1994-03-29 | Interdigital Technology Corporation | Adaptive power control for a spread spectrum communications system and method |
EP0594325A2 (en) * | 1992-10-23 | 1994-04-27 | David Olmstead | Adaptive data rate packet communications system |
US5345467A (en) * | 1991-07-10 | 1994-09-06 | Interdigital Technology Corp. | CDMA cellular hand-off apparatus and method |
US5351269A (en) * | 1990-12-05 | 1994-09-27 | Scs Mobilecom, Inc. | Overlaying spread spectrum CDMA personal communications system |
US5355389A (en) * | 1993-01-13 | 1994-10-11 | Omnipoint Corporation | Reciprocal mode saw correlator method and apparatus |
US5357541A (en) * | 1989-03-23 | 1994-10-18 | Echelon Corporation | Transceiver providing selectable frequencies and spreading sequences |
US5363401A (en) * | 1993-02-25 | 1994-11-08 | Harris Corporation | Mechanism for extracting hybrid (fh/ds) spread spectrum signals within multi-signal type environment |
US5396515A (en) * | 1989-08-07 | 1995-03-07 | Omnipoint Corporation | Asymmetric spread spectrum correlator |
US5402413A (en) * | 1991-04-08 | 1995-03-28 | Omnipoint Corporation | Three-cell wireless communication system |
US5436941A (en) * | 1993-11-01 | 1995-07-25 | Omnipoint Corporation | Spread spectrum spectral density techniques |
US5455822A (en) * | 1990-10-23 | 1995-10-03 | Omnipoint Corporation | Method and apparatus for establishing spread spectrum communication |
US5499265A (en) * | 1989-08-07 | 1996-03-12 | Omnipoint Data Company, Incorporated | Spread spectrum correlator |
US5566202A (en) * | 1995-04-19 | 1996-10-15 | Gec-Marconi Electronic Systems Corp. | System using a split correlator for frequency compensating a phase modulated pseudonoise sequence signal |
US5610940A (en) * | 1994-09-09 | 1997-03-11 | Omnipoint Corporation | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal |
US5627856A (en) * | 1994-09-09 | 1997-05-06 | Omnipoint Corporation | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators |
US5629956A (en) * | 1994-09-09 | 1997-05-13 | Omnipoint Corporation | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal |
US5648982A (en) * | 1994-09-09 | 1997-07-15 | Omnipoint Corporation | Spread spectrum transmitter |
US5648955A (en) * | 1993-11-01 | 1997-07-15 | Omnipoint Corporation | Method for power control in a TDMA spread spectrum communication system |
US5659574A (en) * | 1994-09-09 | 1997-08-19 | Omnipoint Corporation | Multi-bit correlation of continuous phase modulated signals |
US5680414A (en) * | 1994-09-09 | 1997-10-21 | Omnipoint Corporation | Synchronization apparatus and method for spread spectrum receiver |
US5682605A (en) * | 1994-11-14 | 1997-10-28 | 989008 Ontario Inc. | Wireless communication system |
US5689502A (en) * | 1995-06-05 | 1997-11-18 | Omnipoint Corporation | Efficient frequency division duplex communication system with interleaved format and timing adjustment control |
US5692007A (en) * | 1994-09-09 | 1997-11-25 | Omnipoint Corporation | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation |
US5694414A (en) * | 1991-05-13 | 1997-12-02 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
US5724385A (en) * | 1994-09-30 | 1998-03-03 | Qualcomm Incorporated | Serial linked interconnect for summation of multiple waveforms on a common channel |
US5724383A (en) * | 1993-11-01 | 1998-03-03 | Omnipoint Corporation | Method for generating and encoding signals for spread spectrum communication |
US5742638A (en) * | 1991-12-16 | 1998-04-21 | Omnipoint Corporation | Spread-spectrum data publishing system |
US5745484A (en) * | 1995-06-05 | 1998-04-28 | Omnipoint Corporation | Efficient communication system using time division multiplexing and timing adjustment control |
US5754584A (en) * | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Non-coherent spread-spectrum continuous-phase modulation communication system |
US5754585A (en) * | 1994-09-09 | 1998-05-19 | Omnipoint Corporation | Method and apparatus for serial noncoherent correlation of a spread spectrum signal |
US5757847A (en) * | 1994-09-09 | 1998-05-26 | Omnipoint Corporation | Method and apparatus for decoding a phase encoded signal |
US5784403A (en) * | 1995-02-03 | 1998-07-21 | Omnipoint Corporation | Spread spectrum correlation using saw device |
US5787076A (en) * | 1993-11-01 | 1998-07-28 | Omnipoint Corporation | Multi-mode TDMA spread spectrum communication system |
US5790587A (en) * | 1991-05-13 | 1998-08-04 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
US5796772A (en) * | 1991-05-13 | 1998-08-18 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
US5802046A (en) * | 1995-06-05 | 1998-09-01 | Omnipoint Corporation | Efficient time division duplex communication system with interleaved format and timing adjustment control |
US5815525A (en) * | 1991-05-13 | 1998-09-29 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
US5832022A (en) * | 1995-06-02 | 1998-11-03 | Omnipoint Corporation | Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals |
US5832028A (en) * | 1994-09-09 | 1998-11-03 | Omnipoint Corporation | Method and apparatus for coherent serial correlation of a spread spectrum signal |
US5856998A (en) * | 1994-09-09 | 1999-01-05 | Omnipoint Corporation | Method and apparatus for correlating a continuous phase modulated spread spectrum signal |
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US5881100A (en) * | 1994-09-09 | 1999-03-09 | Omnipoint Corporation | Method and apparatus for coherent correlation of a spread spectrum signal |
US5887020A (en) * | 1991-05-13 | 1999-03-23 | Omnipoint Corporation | Multi-band, multi-mode spread-spectrum communication system |
US5926512A (en) * | 1995-10-23 | 1999-07-20 | Yozan Inc. | Matched filter circuit |
US5953370A (en) * | 1994-09-09 | 1999-09-14 | Omnipoint Corporation | Apparatus for receiving and correlating a spread spectrum signal |
US5959980A (en) * | 1995-06-05 | 1999-09-28 | Omnipoint Corporation | Timing adjustment control for efficient time division duplex communication |
US5963586A (en) * | 1994-09-09 | 1999-10-05 | Omnipoint Corporation | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal |
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US6005889A (en) * | 1997-07-17 | 1999-12-21 | Nokia | Pseudo-random noise detector for signals having a carrier frequency offset |
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Also Published As
Publication number | Publication date |
---|---|
EP0574382A1 (en) | 1993-12-22 |
US5396515A (en) | 1995-03-07 |
EP0574382A4 (en) | 1994-08-03 |
CA2105299A1 (en) | 1992-09-07 |
CA2105299C (en) | 2000-07-25 |
JPH06505131A (en) | 1994-06-09 |
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